Method of obtaining coffee flavor



Patent e d Nom 2, 19 2 6. I E I I i I I UNITED STATES PATENT OFFICE.

JOHN LEONARD KELLOGG, F BATTLE CREEK, MICHIGAN.

METHOD OF OBTAINING COFFEE FLAVOR.

No Drawing. Application filed February 15, 1923. Serial No. 619,277. I

This invention relates to an improvement foreign material. The coffee may be ground in methods of obtaining coffee flavor and or partially disintegrated before compresswith respect to its more specific features to ing, and preferably it is roasted, since roastmeth-ods of obtaining de-cafl'einized flavor. ing develops the aromatic caffeonc, and lib- 5 A bj t of th in ntion i to ro id crates a portion of the caffeine from its coma method of obtaining coffee flavor in its natbination with the caifeetannic acid. This ural state from the dry bean. caffeone or caffeol may be used to flavor cof- Another object i to provide a m th d f fee essence or extract, ice creams, confecobtaining the flavor in its nat ral c mbinations and the like, or for cooking purposes. 10 tio v ith ff l o afl on The caffcol or caffcone may be de-caifein- Another objectis to provide a method of ized af r extraction from the bean, in any obtaining the caifeone or caifeol from the le nner as. forinstance by a cenbean Without liberating the caffeine from uge- 'In extracting in this manner, the j th cellulose truct re, caifeone or caffeol iscooled before it is placed l Another object is to provide a eth d of in the centrifuge. By the operation thereof obtaining the flavor in a condition itabl the oil is thrown out, the caffeine crystals refo i m di t e, maining in the receptacle. The crystals may Another object is to provide a method of be purified by Washing in the centrifuge, obtaining the flavor in a form such that it after the cafleol or caffeone has been sepa- 20 will not deteriorate with age, rated. By this process, no solvents for the Another object is to provide a ethod of caffeine, Which tend to injure the flavor, are obtaining the flavor inva form free from necessary. deleterious effects, v From 1 to 2% of the product, whether or Another object is to provide a method of n de-Catfeinizcd, may be added to dry 25 mechanically de-caffeinizing the caffeone or soluble extractive material from cereals or caffeol after it has been remov d fr th the like, and a true coffee flavor obtained. bean. This dry soluble extractive material may be Other objects will be in part obvious and obtained from cereals, or from de-flavorized in part pointed out hereinafter. coffee, which may or may not'be de-caffein- 9 The inventlon accordingly consists in the ized. A greater percent of-flavor may be several steps and the relation and order of d f d, b t e amount sp cified Wi l one or more of such steps with relation to usually be sufficient. The flavor in the form each of the others thereof, which will be ex of volatile essences is. carried. y h 6X- emplified in the hereinafter disclosed methpressed 011, caffeol or caffeone, and since 0d and thescope of the application of which there is. no admixture of foreign matter, will be indicated in the claims that follow. and the oil is in its naturalstate, as well as It is known that oil will retain the volathe essences, they areretained by theoil and tile essences upon which flavor is dependent the product does not readily deteriorate. much longer than any other medium, as for Pressure is applied to the bean in any suitinstance, spirits or water. This is recogable or desired manner, and preferably with nized .in the making of attar of roses, for as little as possible heating of the bean, which instanf'e, wherein the distillate is condensed tends to liberate the caffeine from the celluand allowed to drop in melted grease, which lose structure. I holds the very delicate odor of the roses. The temperature of the bean when the 45 The caffeone or caifeol carries the flavor of pressure is applied is relatively low, not the coffee, and when the caffeone or caffeol usually exceeding 150 F. after-"expression. is extracted from the coffee, in its natural The crude coffee flavor, that is the caflt'eonc state, it carries a large amount of the flavor, or caffeol just expressed, contains a portion and retains it-With but little loss for long of foots or fine particles of'c'offee. This 105 5 0 periods. crude product as it leaves the press and be- In the present invention, I remove the fore filtration, or before it isseparated by caffeone or caifeol by subjecting the bean, centrifugal action, contains approximately eithergreen or roasted to pressure, sufficient 4/10ths of 1% of caifein. Ordinary coffee to express the caffeone or caffeol. Thus I contains from 1% tol of cafl'ein. In uti- 55 obtain the essential oil or caifeol in its natlizing the improved flavor, however, approxinral state, without the admixture of any mately.2% of the flavor is added to the material which is to be flavored, and this would reduce the percentage of caffein in the beverage to 8/1000ths of 1%. A product containing less than 5/100ths of 1% is considered harmless. When the improved coffee flavor is cooled to 54 F., and centrifugal separation made, the filtered out portions of the flavor contain less than -,%-,-ths of 1% of calfein. If this product were used at the ratio of 2% in flavoring, the beverage would contains less than 4/1000ths of 1%. It is possible to reduce the caffein content of the crude oil to 11/100ths of 1% by the use of refrigeration and centrifuge. When 4% of this material is used to flavor the dry soluble product, the caffcin is reduced to 0.0044%. The improved flavor, that is the catfeone or caffeol may be added. to whole grain coffee, ground coflee or cereal coffee substitutes, and marketed in this form.

As many changes could be made in carrying out the above process Without departing from the scope of the invention, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

It is also'to be understood that the language'used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Let ters Patent is:

1. A method. of obtaining coffee flavor, which includes expressing essential oils from coffee by pressure alone, while maintaining the coffee and flavor at a moderate temperature.

2. A method of extracting coffee flavor, which includes expressing essential oils from roasted disintegrated coffee beans by pressure alone, the essential oils being maintained at a moderate ten'iperature throughout the process of extraction thereof.

3. A method for obtaining coffee flavor, which comprises roasting and disintegrating coffee and extracting the caifcol and aroma therefrom by pressure alone at a temperature of about 150 C.

4. A method for obtaining coffee flavor, which comprises roasting and disintegrating coffee. and extracting the caifeol and aroma therefrom by pressure alone, cooling the product, and centrifuging.

5. A method for obtaining coffee flavor, which comprises roasting and disintegrating coffee and extracting the caifeol and aroma therefrom by pressure alone, cooling the product to a temperature of about 54 F, and centrifuging.

In testimony whereof I aflix my signature.

JOHN LEONARD KELLOGG. 

